Problem of sequence diagram generated from multiple communication diagrams

I got 3 communication diagrams for a use case ,when I generate the sequence diagram , It doesn’t look like I’ve expected.

sequenceDiagram.JPG
collaborationDiagrams.JPG
generation.JPG

Hi Flame51,

Thanks for your post. I’ll check with our engineers and come back to you tomorrow.

Best regards,
Lilian Wong

thank you

Hi Flame51,

I’m sorry that we are unsure about the diagrams linkage solely from your images. Would you mind to attach your project file (or send to my email address: lilian.wong@visual-paradigm.com ) so we can take a look?
Also, could you please tell me how did you create the sequence diagram as your first attached image? Thanks in advance!

Best regards,
Lilian Wong